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**Maburo****Member**- From: Cranbrook, BC
- Registered: 2013-01-08
- Posts: 283

I am thinking of a two digit number, AB, such that A x B=AB/2, and A+B=AB/4. What is the number AB?

"Pure mathematics is, in its way, the poetry of logical ideas."

-Albert Einstein

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**scientia****Member**- Registered: 2009-11-13
- Posts: 222

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 85,270

Hi;

Welcome to the forum.

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

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